We're dividing 81210864 by 772 
Our goal is to divide 81210864 by 772.

Step 1:
772 goes into 8 0 times with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 772

Let's proceed to step 2:
772 goes into 81 0 times with a remainder of 81.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 81 after subtracting 0 from 81.
Take the next digit (2) from the dividend and append it to 81, then repeat: 812 / 772

Step 3:
772 can be fit into 812 1 times, resulting in a remainder of 40.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 772 from 812 to get 40.
Bring next digit (1) of the dividend behind the 40 and repeat the process: 401 / 772

Moving on to step 4:
401 divided by 772 is 0 with a remainder of 401.
The next digit of our result is 0. 
Result so far: 10.0
Subtract 0 from 401 to get 401.
Grab the next digit (0) from the dividend, add it to 401, then carry on: 4010 / 772

Advancing to step 5:
If we divide 4010 by 772, we get 5 and a remainder of 150.
Put 5 as the next digit of the answer. 
Result so far: 105.0
If we subtract 3860 from 4010, we get 150.
Take the next digit (8) from the dividend and append it to 150, then repeat: 1508 / 772

Moving on to step 6:
When dividing 1508 by 772, we get 1 with a remainder of 736.
The number 1 becomes the next digit in our result. 
Result so far: 1051.0
Subtract 772 from 1508 to get 736.
Append the next digit (6) from the dividend to 736 and continue with: 7366 / 772

Step 7:
7366 divided by 772 is 9 with a remainder of 418.
Record the quotient 9 as the next digit in the result. 
Result so far: 10519.0
If we take 6948 away from 7366, we end up with 418.
Take the next digit (4) from the dividend and append it to 418, then repeat: 4184 / 772

Advancing to step 8:
772 goes into 4184 5 times with a remainder of 324.
Put 5 as the next digit of the answer. 
Result so far: 105195.0
Deduct 3860 from 4184 and we're left with 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

Let's proceed to step 9:
The number 772 fits into 3240 4 times, leaving a remainder of 152.
The next digit of our result is 4. 
Result so far: 105195.4
The remainder is 152 after subtracting 3088 from 3240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Advancing to step 10:
772 goes into 1520 1 times with a remainder of 748.
Put 1 as the next digit of the answer. 
Result so far: 105195.41
Deduct 772 from 1520 and we're left with 748.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7480, and continue the process.

Let's proceed to step 11:
772 can be fit into 7480 9 times, resulting in a remainder of 532.
The next digit of our result is 9. 
Result so far: 105195.419
Subtracting 6948 from 7480 leaves us with 532.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5320, and continue the process.

On to step 12:
5320 divided by 772 is 6 with a remainder of 688.
The number 6 becomes the next digit in our result. 
Result so far: 105195.4196
If we take 4632 away from 5320, we end up with 688.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6880, and continue the process.

Moving on to step 13:
772 can be fit into 6880 8 times, resulting in a remainder of 704.
Write down 8 as next digit of the result. 
Result so far: 105195.41968
If we take 6176 away from 6880, we end up with 704.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7040, and continue the process.

Let's proceed to step 14:
7040 divided by 772 is 9 with a remainder of 92.
The next digit of our result is 9. 
Result so far: 105195.419689
The remainder is 92 after subtracting 6948 from 7040.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Advancing to step 15:
772 goes into 920 1 times with a remainder of 148.
The next digit of our result is 1. 
Result so far: 105195.4196891
Subtract 772 from 920 to get 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Let's proceed to step 16:
1480 divided by 772 is 1 with a remainder of 708.
The next digit of our result is 1. 
Result so far: 105195.41968911
If we take 772 away from 1480, we end up with 708.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7080, and continue the process.

The final result is 105195.41968911 with a remainder of 7.08e-07.